Below are some websites for teachers organized by disciplines:

English

http://www.wordle.net/


http://tewt.org/
http://englishcompanion.ning.com/
http://www.wordahead.com/Home/tabid/37/Default.aspx
http://www.ideastoinspire.co.uk/


https://falconroost.wikispaces.com/Literature+Projects#beowulf
http://poe200th.com/
http://www.chompchomp.com/menu.htm


http://etc.usf.edu/lit2go/

http://www.savethewords.org/
http://www.timetoast.com/

Science

http://www.thetech.org/
http://www.calculus.org/
http://www.chemcollective.org/
http://www.flinnsci.com/
http://new.pogil.org/materials/high_school.php
http://phet.colorado.edu/index.php
http://employees.oneonta.edu/viningwj/sims/index.html
http://switchzoo.com/default.htm
http://labwrite.ncsu.edu/
http://www.exploratorium.edu/index.html
http://www.digitaldutch.com/unitconverter/
http://www.nationalgridfloe.com/
http://species.wikimedia.org/wiki/Main_Page
http://school.discoveryeducation.com/sciencefaircentral/
http://www.ideastoinspire.co.uk/
http://classroomearth.org/
http://www.jove.com/
http://www.gunn.co.nz/astrotour/
http://www.visiblebody.com/start
http://learn.genetics.utah.edu/
http://www.changbioscience.com/genetics/punnett.html
http://www.sciencecomics.uwe.ac.uk/index.php

Periodic Table:
http://tech4teaching.org/wpblog/?p=311
http://www.ptable.com/

Open Source Software

(That means- FREE!)
Biologica
Dynamica

Molecular Workbench
Open Source Physics ||

Social Studies.

Google Earth:
http://edweb.tusd.k12.az.us/dherring/ge/googleearth.htm
http://dooley.dk/ge.htm
http://www.freetech4teachers.com/2009/03/google-earth-links-you-might-have.html

http://www.timetoast.com/
http://dooley.dk/ge.htm

http://www.theplaceswelive.com/
http://www.miniature-earth.com/me_english.htm

http://www.histografica.com/
http://www.capzles.com/
http://www.timetoast.com/
http://www.globalkids.org/
http://kindo.com/
http://www.spottedbylocals.com/
http://www.quotiki.com/
http://www.myhero.com/myhero/
http://strawpollnow.com/
http://www.guhsd.net:16080/mcdowell/wq/peace/
http://labs.google.com/inquotes/index.html
http://www.newseum.org/todaysfrontpages/archive.asp
http://www.timerime.com/
http://www.citymelt.com/
http://www.city-data.com
http://www.ilive.at/
http://www.apimages.com/Index.aspx?ReturnUrl=%2fDefault.aspx
http://specials.washingtonpost.com/timespace/world/
http://timeglider.com/app/viewer.php?uid=titanic
http://museumbox.e2bn.org/about/
http://www.worldhistory.com/index.php
http://www.learningcurve.gov.uk/focuson/film/

http://psychexps.olemiss.edu/
http://coglab.wadsworth.com/
http://psych.hanover.edu/Research/exponnet.html
http://dir.yahoo.com/Social_Science/Psychology/Research/Tests_and_Experiments

Math

.
http://www.mathsonline.co.uk/freesite_tour/resource/whiteboard/decimals/dec_notes.html
http://themathworksheetsite.com/numline.html
http://www.math.harvard.edu/~knill/mathmovies/index.html
http://www.teachforever.com/2009/01/15-engaging-high-school-math-activities.html
http://www.speedcrunch.org/en_US/index.html
http://www.bigbrainz.com/index.php?PARTNER=brettstaylor
http://ocw.mit.edu/OcwWeb/hs/home/home/index.htm

http://www.e-booksdirectory.com/mathematics.php
http://nlvm.usu.edu/en/nav/vLibrary.html
http://phet.colorado.edu/simulations/index.php?cat=Featured_Sims
http://woodgears.ca/eyeball/
https://www.guaranteach.com/